Spray nozzle



S. P. KINNEY ET AL. 2,588,247

SPRAY NOZZLE March 4, 1952 Filed NOV. 14, 1949 2 SHEETS--SHEET l INVENTOR. SELWYNE P. KINNEY. CORNELIUS J. GARRIGAN. WARD W. CLARKE.

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ATTORNEYS.

S. P. KINNEY ET AL March 4? 1952 SPRAY NOZZLE 2 SHEETS-SHEET 2 Filed Nov. 14. 1949 INVENTOR. SELWYNE P. K INNEY. CORNELIUS J. GARRIGAN. By WARD w. cLARKE. aug, www@ ATTORNEYS.

Patented Mar. 4, 1952 SPRAY N OZZLE Selwynev PL Kinney, Grafton, Cornelius J. Garrigan, Greentree, and Ward W. Clarke, Monaca, Pa., assignors to S. P. Kinney Engineers, Inc., Pittsburgh, Pa., a corporation ofv Pennsylvania Application November 14, 1949, Serial'No. 127,216

3 Claims.

This invention relates to` spray nozzles,4 and', more particularly', to an improved spray nozzle of the self-cleaning' or flushing type which may be used in blast furnace gas washers;

Spray nozzles used in blast furnace gas' washers` operate under adverse conditions in that the water supply to the nozzle is` frequently very dirty. These' nozzles are constructed to furnish a'l solid cone spray. For this purpose, the nozzles are commonly provided with turbulent condition producing deflecting' elements spaced inwardly from the nozzle orifice. These deilecting elements mayu take the form of a pair of cr'osfed semi-circular blades arranged to provide atortuous' path forthe water flowing to the oriiice. Due tothe dirty condition ofthe water, dirt, ber', weeds, string, etc., and other foreign material collects against thel cross` blades. This material will vbuild up on' the" cross blades until plugging', partial or complete; of the nozzle is had- The plugging action takes place regardless ofv the shape or construction of the turbulent condition producing deiiecting blades in the nozzle.

One of the' principall objects of this invention is to provide a spray nozzle for producing a solid cone spray for' use inv blast furnace gas washers which may'beflus'hed or' cleaned by operationv of a'4 remotely located control element without' the necessity of taking the nozzle apart. To this end, thefcrossed blades or deecting elements are mounted for movement from their operative spray producing position in the nozzle to a withdrawn position which is also within the nozzle for a cleaning. or' ushing operation; The spray wa'- t'er is supplied to the nozzle by a supply conduit which. is angularly inclined with respectV to the axis `ofthe spray' nozzle. The withdrawn position'of the' crossed blades' ordeilecting elements is at,` the point` of intersection of the axes of the spray nozzle and its" supply conduit; 'When the crossedfbladesare withdrawn to this position, the relative' direction of' movement ofthe water over the crossed. blades will' be' changed with respect tothe direction of" water movement over' the blades when` they are' in their operative spray producing position. Due` to the change in the direction of movement' of the Water over the blades; dirtV which has built upon the cross-blades willl` be'ushed off and washed out' through` the spray' nozzle. Such` dirt may' move out through the nozzle without interference sincel the Withdrawal ofv the crossed bladespro'vides' an unobstructed" passage for the` water' through theA noz'- zl'e l lll linkage system which may be positively actuated from a remote point for moving the crossed blades or deecting elements of the nozzle to a with--Y drawn position for a cleaning or flushing action thereon.

A still further object of the invention is to pro-'- vide a mounting for the deector elements of a spray nozzle by which they may be moved to a withdrawn position still inV the: path of thel water flowing through the nozzle in which the flow of water through thenozzle will be effective toperform a cleaning action on the deflector elements;

Other objects and advantages of the invention will become apparent from' the' following description.

In the drawings, there is shown a' preferredlexn bodiment of the invention. In this showing.:-

Fig. l is a sectional view of a spray nozzle con-h structed in accordance with the principlesof thisinvention;

Fig. 2 is an end elevational view of the nozzle looking in a direction from the right of` Fig. 1; and

Fig. 3 is a sectional view takenl substantially along the line-III-III of Fig. 1.

Referring to the drawings, the numeral 1 designates a spray nozzle having a circular discharge orice 2' therein. The body of the nozzlev I is enlarged inwardly of the orifice 2 to provide a cylindrical chamber 3 in whichdeflector elements 4 and 5 are mounted. The deflector elements 4 and 5 are semi-circular discs arranged in opposed and crossed fashion as illustrated. The water flowing' through the nozzle l strikes the discs 4 and 5, and in order to continue its flow through the` nozzle, must low laterally to a position underneath the discV other than the one obstructing its flow. This imparts a swirling turbulent motion to the water flowing to the orifice 2. Consequently, the water emerging from the orifice 2 will be in the form of a line-spray and will spread out' in the shape of a solid cone. Although the nozzle has been described as having semi-circular discs' therein, it will be understood that the invention is equallyA applicable `to nozzles having other forms of turbulent cleflector` ele-1 ments operative to cause a1 solid cone-shapedI spray to be formed'by the water emerging' fronr the orice 2.

With nozzles of this type, dirt in the spray water may collect on the dee-ctor elements 4"` and 5, and cause complete 01"' partial cloggingof thev spray nozzle. The collection of dirt on the deiiector elements is acceleratedlwhere thewa'ter contains elongated pieces of foreignmaterial such' reference is hereby made for a more detailed del scription and a better understanding. The novel structure comprises the angularly inclined blade elements 4a and 5a respectively positioned under the blade elements 5 and 4 in angular positions parallel to the blades 5 and 4. The blade element 4a has an arm 4b which is welded to the upper surface of the blade element 4 to secure it in position, and the blade element 5a similarly has an arm 5b which is welded to the upper surface of the blade element 5 to secure it in position. In addition, the edges 4c and 5c are spaced a slight distance apart so that a limited amount of water may ilow through the nozzle without striking the blades 4 and 5. This specific structure has been found to decrease the tendency for dirt to collect in the nozzles with consequent plugging, and to increase the size of the cone of sprayemerging from the nozzle. In action, water striking the element 4 is deflected laterally to a position under the element 5 where it is again deflected by the element 4a.. In a similar manner, a second deflecting action is performed by the blade element 5a on the water iiowing laterally to a position under the element 4. The deecting actions accomplished by the elements 4a and 5a is elective to increase the diameter of the cone of spray emerging from the nozzle.

In accordance with the principles of this invention, a conduit or housing 6 is provided for supplying water to the nozzle I. The conduit housing 6 is threaded as at 'I for connection to a water supply conduit. As will be noted from Fig. 1, the axis of the conduit 6 is in a horizontal plane and is angularly inclined with respect to the axis of the nozzle I. The axes of the nozzle I and conduit 1G intersect at the point 8, and the housing 6 is enlarged about this point to provide a cleaning chamber into which the deflecting elements may be withdrawn to a position as indicated by the dotted lines.

The nozzle I is provided with a ilange 3 at its upper end which is receivable in a groove Il) formed in a circular opening in the housing 6. The flange 9 is held against the bottom of the groove Iby a circular sealing ring II which is clamped into position by a clamping ring I2 secured to the housing 6 by fastening elements I3.

In order to remove the deflector elements 4 and 5to their withdrawn position, they are rigidly secured, as by welding, to the lower end of an operating rod `I4 Ywhich lis mounted for rectilinear movement along an extension of the axis of thenozzle I. The `rod I4 has a guided sliding movementA through a liquid sealing gland I5 mounted in an opening formed in a plate I which provides a top cover for the housing 6. The upper end of the rod I4 has a threaded connection to 'a bifurcated member I'I having spaced arms I8 which form a support for a pin I9 extending transversely of the arms I8. A bell crank lever 28 having a pivotsupport 2I is provided for imparting movement to the rod I4. One arm of the bell crank lever is provided with a slot 22 in which the pin I9 is receivable. The other arm of the bell crank lever 20 is provided with an opening for the reception of a pin 23 extending transversely of the arms 24 of an actuating yoke which has threaded connection with the inner end of the actuating rod 25. The actuating parts for the rod I4 are contained within a housing 26 mounted on the cover plate I6. The actuating rod 25 is slideably mounted in the housing 26 by a stuing gland 21. The housing 26 is preferably lled with oil or grease to protect the actuating parts from the effect of dirt and water. A stopper 28 is provided in the housing 25 by which it may be filled with oil, grease, or other suitable lubricant.

In operation, the nozzle is coupled to a water supply pipe in a blast furnace gas washing apparatus by the threaded coupling 1. The water is then fed to the orifice V2 through the housing 6 and chamber 3. As explained above, the turbulent condition imparted to the water as it ows by the deecting elements 4 and 5 will cause the water to emerge from the nozzle 2 in a dense spray having the shape of a solid cone. When dirt has collected on the deflector plates .4 and 5 or other surfaces of the nozzle, a ushing action may be had by moving the rod 25 to the rightas viewed in Fig. 1 to move the bell crank lever 2n to the position shown in dotted lines. Such movement will pull the operating rod I4 upwardly to move the defiecting elements 4 and 5 to the position shown in dotted lines. When the deecting elements 4 and 5 are withdrawn from their op-y erative position inthe nozzle I to the ilushing position as indicated by dotted lines, the direction of movement of the water over the surface of the defiecting elements 4 and 5 will have been changed. YWhereas the water moves over the deflector elements in a substantially vertically downward direction when they are in their operative position in the chamber 3, the water striking the deflector elements when in their flushing position will be traveling in a horizontal direction. The water will thus strike the deflector elements at a different angle when they are in their withdrawn flushing position and will be effective to knock off any dirt which may have accumulated on suchvelements. Such dirt may then flow readily out through the nozzle 2 since the movement of the water through the nozzle will not be impeded when the deflector elements are in their flushing position.

After the nozzle has been flushed, the deflector elements 4 and 5 may be moved to their operative position in the chamber 3 by moving the actuating rod 25 inwardly to the left as viewed in Fig. 1. This will rotate the bell crank lever 20 in a counter-clockwise'direction to move the rod I4 downwardly for returning the deflector elements 4 and 5 to their operative positions as illustrated in Fig. 1. y

It will be understood that the principles of this invention are applicable to nozzles in which the deflector elements 4a and 5a are omitted. That is, any type of deflector element may be provided in the nozzle I for the purposes of this invention.

The actuating rod 25 will, ofcourse, extend to a position out of the housing (not shown) constituting a part of the gas washing apparatus in which the nozzle is mounted. In such case, the flushing action of the nozzle which may be accomplished by a manual operation of the rod 25. However, it will be understood that automatic or power actuation of the rod 25 is contemplated in accordance with the principles of this invention. Where power means is provided for actuating the rod 25, the power means, such as a solenoid, for example, may be remotely located in a position outside of the housing for the apparatus, or may be located within the housing in a position adjacent the nozzle housing 26. In such case, it will be understood that actuation of the rod 25 may be made automatically at timed intervals or in response to clogging of the nozzle l.

While we have illustrated and described one specic embodiment of our invention, it will be understood that this is merely by way of illustration, and that various changes and modifications may be made therein within the contemplation of our invention and under the scope of the following claims.

We claim:

1. A spray nozzle for gas washing apparatus comprising a body member having an end portion of reduced diameter with a discharge orifice therein, an enlarged portion inwardly of said orifice and forming a cylindrical chamber, and a tapering portion connecting said chamber with said orice, said tapering, end, and enlarged portions having a common axis, a housing connected with said body member and providing an enlarged iiushing chamber inwardly of said cylindrical chamber, a conduit for supplying water to said ilushing chamber for delivery to said orice, said conduit having its axis inclined relative to and intersecting with said common axis in said flushing chamber, deiiector vanes having a normal operative position in said cylindrical chamber for causing water iiowing therethrough to emerge from said orice in a spray having the shape of a solid cone, said deflector vanes having a mounting for movement from said operative position in said cylindrical chamber to a ushing position in said flushing chamber adjacent the point of intersection of said axes, and an actuating member for moving said mounting and thereby said vanes from said operative position to said flushing position in which water entering the flushing chamber will impinge directly on said vanes and thereby remove debris lodged thereon.

2. A spray nozzle for gas washing apparatus comprising a body member having an end portion of reduced diameter with a discharge orice therein, an enlarged portion inwardly of said orice and forming a cylindrical chamber, and a tapering portion connecting said chamber with said orice, said tapering, end, and enlarged portions having a common axis, a housing connected with said body member and providing an enlarged iiushing chamber inwardly of said cylindrical chamber, a, conduit for supplying water to said ushing chamber for delivery to said orice, said conduit having its axis inclined relative to and intersecting with said common axis in said ushing chamber, deiiector vanes having a normal operative position in said cylindrical chamber for causing Water flowing therethrough to emerge from said oriiice in a spray having the shape of a solid cone, a rod mounting said vanes: and having a portion thereof extending to a position without said housing, and means including a connection for actuating said rod from a remote location to move said vanes axially from said operative position to a ushing position in said flushing chamber adjacent the point of intersection of said axes.

3. A spray nozzle for gas washing apparatus comprising a body member having an end portion of reduced diameter with a discharge orifice therein, an enlarged portion inwardly of said orice and forming a cylindrical chamber, and a tapering portion connecting said chamber with said orice, said tapering, end, and enlarged portions having a common axis, a housing connected with said body member and providing an enlarged iiushing chamber inwardly of said cylindrical chamber, a conduit for supplying water to said flushing chamber for delivery tosaid oriiice, said conduit having its axis inclined relative to and intersecting with said common axis in said flushing chamber, deiiector vanes having a normal operative position in said cylindrical chamber for causing water owing therethrough to emerge from said orifice in a spray having the shape of a solid cone, an enclosure mounted on said housing, an operating rod having opposite ends positioned respectively in said housing and enclosure and being mounted for rectilinear movement, said vanes being mounted on the end of said rod within said housing for movement thereby from said operative position to a flushing position in said flushing chamber, and means for operating said rod comprising an actuating rod extending into said enclosure, and a bell .crank mounted in said enclosure and having one arm connected to said actuating rod and its other arm connected to said operating rod.

SELWYNE P. KINNEY. CORNELIUS J. GARRIGAN. WARD W. CLARKE.

REFERENCES CITED Thefollowing references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 593,732 Burck Nov. 16, 1897 1,151,656 Brown Aug. 31, 1915 1,232,489 Brown July 10, 1917 1,295,922 Petit Mar. 4, 1919 1,561,809 Valerius Nov.. 17, v1925 1,602,748 Browning Oct. 12, 1926 1,968,992 Conkling Aug. 7, 1934 

